Oersted Experiment on Magnetic Effect of Current Oersted Experiment Arrangement : A straight wire AB is connected to a battery V and key K. The wire is held horizontally over a magnetic needle. Working : When key is closed, current flows in the wire in the direction as shown. The needle deflects one side. When key is taken out and current in wire becomes zero, needle … [Read more...] about Oersted Experiment on Magnetic Effect of Current

## What is Fraction and How many Types of Fractions are there

What is Fraction and How many Types of Fractions are there Fraction A number that compares part of an object or a set with the whole, especially the quotient of two whole numbers is written in the form of xly is called a fraction. The fraction 1/3, which means 1 divided by 3, can be represented as 1 pencil out of a box of 3 pencils. A fraction is a (i) part of a whole. (ii) … [Read more...] about What is Fraction and How many Types of Fractions are there

## What is the Area of a Right Circular Cone

What is the Area of a Right Circular Cone If r, h and ℓ denote respectively the radius of base, height and slant height of a right circular cone, then- ℓ 2 = r2 + h2 Area of base = πr2 Curved (lateral) surface area = πrℓ Total surface area = πr (ℓ + r) Volume = πr2h Read more about Radius of a Right Circular … [Read more...] about What is the Area of a Right Circular Cone

## What are the Isotopes, Isobars and Isotones of an Element

What are the Isotopes, Isobars and Isotones of an Element The proton number of an atom determines the type of element. For example, the proton number Z = 11 is for the element sodium while Z = 12 is for magnesium. Therefore, all atoms of the same element contain the same number of protons. The number of neutrons in the atoms of an element may be different. These atoms … [Read more...] about What are the Isotopes, Isobars and Isotones of an Element

## What is Cumulative Frequency Curve or the Ogive in Statistics

What is Cumulative Frequency Curve or the Ogive in Statistics First we prepare the cumulative frequency table, then the cumulative frequencies are plotted against the upper or lower limits of the corresponding class intervals. By joining the points the curve so obtained is called a cumulative frequency curve or ogive. There are two types of ogives : Less than ogive : … [Read more...] about What is Cumulative Frequency Curve or the Ogive in Statistics